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1958 Map of Tyonek C-7, 1966 Print
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1958 Map of Tyonek C-7

USGS Topo · Published 1966

About this map

Mount Gerdine dominates the center of this 1958 survey, marking the high point of a frozen landscape defined by massive ice fields and unrecorded mountain peaks. The map details the complex glacial geography at the intersection of the Matanuska-Susitna and Kenai Peninsula boundary, where no roads or established trails existed at the time of mapping. Extensive ice flows, including the Hayes Glacier and the North Branch Trimble Glacier, are depicted with intricate contour lines and crevasse markings. This topographic study, based on aerial photography from 1952 and 1957, captures a wilderness environment before significant modern climate shifts, providing a record of the South Branch Trimble Glacier, North Twin Glacier, and the curiously named Block and Tan Glacier.

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Map Details

Date Portrayed1958
Date Published1966
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:63,360
Physical Dimensions17 x 20.8 inches

Editions of this 1958 Tyonek C-7 Map

This is the sole edition of this map. No revisions or reprints were ever made.

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain